package com.atguigu.spzx.manager.service.Impl;

import cn.hutool.captcha.CaptchaUtil;
import cn.hutool.captcha.CircleCaptcha;
import com.atguigu.spzx.manager.service.ValidateCodeService;
import com.atguigu.spzx.model.vo.system.ValidateCodeVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;

import java.util.UUID;
import java.util.concurrent.TimeUnit;

@Service
public class ValidateCodeServiceImpl implements ValidateCodeService {

    @Autowired
    private RedisTemplate<String,String> redisTemplate;

    //生成图片验证码
    @Override
    public ValidateCodeVo generateValidateCode() {
        // 1、通过工具生成图片验证码工具
        // hutool
        CircleCaptcha circleCaptcha = CaptchaUtil.createCircleCaptcha(150, 48, 4, 2);
        String codeValue = circleCaptcha.getCode(); // 4位验证码的值
        String imageBase64 = circleCaptcha.getImageBase64(); // 返回图片验证码，base64位编码

        // 2、把验证码存储到redis里面，设置redis的key：uuid redis的value：验证码的值
        //设置过期时间
        String key = UUID.randomUUID().toString().replaceAll("-","");
        redisTemplate.opsForValue().set("user:validate"+key,codeValue,5, TimeUnit.MINUTES);

        // 3、返回ValidateCodeVo对象
        ValidateCodeVo validateCodeVo = new ValidateCodeVo();
        validateCodeVo.setCodeKey(key); //redis存储数据key
        validateCodeVo.setCodeValue("data:image/png;base64,"+imageBase64);

        return validateCodeVo;
    }
}
